General

  • Target

    SecuriteInfo.com.Win32.Malware-gen.18534.23013.exe

  • Size

    1.7MB

  • Sample

    240601-sra71sfd7z

  • MD5

    828f28bdc03ba59ccb9c87927432944f

  • SHA1

    1d6bae744f2e3d51d1953938de860643535116c5

  • SHA256

    b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a

  • SHA512

    02ef22314ee0f05e8ccedc97e631895644d8f6883a3168c2ac73c1144427084ba8e86f94b2455dc22919f62b977843891a43c855d80b862cb864582f09041f6c

  • SSDEEP

    24576:yeU2lorr0JloL2aeJEA9fPcbhZ98K7jH8lYcxpQMBCjZEJ5FT0zmIp9fKrN+Kwa5:TVo+bhIWJxpVJzT0zmI9g+KwVNL7q

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

94.232.249.90:8848

Mutex

ewtxrddmwpo

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %Temp%

aes.plain

Targets

    • Target

      SecuriteInfo.com.Win32.Malware-gen.18534.23013.exe

    • Size

      1.7MB

    • MD5

      828f28bdc03ba59ccb9c87927432944f

    • SHA1

      1d6bae744f2e3d51d1953938de860643535116c5

    • SHA256

      b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a

    • SHA512

      02ef22314ee0f05e8ccedc97e631895644d8f6883a3168c2ac73c1144427084ba8e86f94b2455dc22919f62b977843891a43c855d80b862cb864582f09041f6c

    • SSDEEP

      24576:yeU2lorr0JloL2aeJEA9fPcbhZ98K7jH8lYcxpQMBCjZEJ5FT0zmIp9fKrN+Kwa5:TVo+bhIWJxpVJzT0zmI9g+KwVNL7q

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

System Services

2
T1569

Service Execution

2
T1569.002

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

1
T1562

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Impact

Service Stop

1
T1489

Tasks